Oil-stove



(N0 Model.)

Patented Dec. 11, .1894.

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UNITED STATES PATENT OFFICE.

AUGUSTINE CIWEST, OF CAMBRIDGE, MASSACHUSETTS.

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SPECIFICATION forming part of Letters Paar No. 53o,eo9, dated December 11, 1894.

Application filed March 22, 1894.

To all whom it may concern.-

Be it known that I, AUGUSTINE. 0.]Wnsr, a citizen of the United States, residing at Gambridge,in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Oil-Stoves; and

I do hereby declare the following to be a full,

central draft heater is employed.

This invention may be considered as relating to that class of heater shown and described in an application, Serial No. 437,336, filed in my name on July 20, 1892.

My improvements consist, first, in the pe-' culiar arrangement of the chimney holder, whereby the heat, which is generated is prevented from being imparted to the wick-tube either by conduction, convection or radiation; secondly, in the extension of the wick-tube cylinder through and below the base of the oil reservoir, further subdividing said cylinder by an annular plate or partition and in perforating the wall of thecylinder both above and below said partitionand thus provide for air currents; thirdly, in providing ajacket for the chimney of the heater in order that all heat radiated from the chimney proper may be confined and conveyed into the hot air receptaole. In this way the effect of the heater is intensified. r I

Other features embodied in my invention will be more fully hereinafter described.

The drawings represent in Figure 1, aside elevation partly in section of an .oil-stove embodying any-invention. Fig. 2 is a vertical diametrical section of the heater in part'showing the various component elements some what enlarged. Figs. 3-and 4 are perspective views of different formsof the cap or chimney holder. Figs. 5 and 6, are similar views of two forms of construction of the annular plate which supports the chimney'holder. In the drawings Fig. 1, shows an oil stove of the class before referred to, composed of a semi N... 504603. (No model.)

the stove. Preferably in general shape these heaters are sections of cylinders and are surmounted by the metallic stove-top or hot air chamber 9 which covers the stove and serves the usual function of being adapted to support cooking utensils. Furtherm ore theusual apertures 10 are also provided, when greater heat is required in cooking. The lower portions of the heaters pass through the oil reservoir and extend through it and beyond.

1 The wick-tube 12 is a double cylinder, composed of inner and outer wall tubes 13, 14 respectively, while a. perforated wick-raising tube 15, the perforations being shown by the broken black line in Fig. 2, is operated by a toothed wheel 16. lnclosing the wick-tube is the wick-tube cylinder 17 somewhat larger in diameter to form anair channel or space for free passage of-air. Said cylinder is divided into two portions 41, 42, respectively upper and lower by means of a removable annular plate or partition 43, shown in Fig. 2 as imperforate. This partition rests upon a bead or ledge 45, which contracts the boreof the wick-tube at this point. Circumferentially of the wickf-tube at a point just below this plate 43, are created a number of apertures 46. Hence as air. rises up through the lower chamber it isprevented from passing above the partition 43 and escapes outwardly through said apertures. Conversely to allow ingress of air into and through the upper part of the wick-tube thiselement is pierced with numerous small holes 40. In the drawings this perforated portion is shown asa separate piece, but it may be formed integral with the wick-tube cylinder properj17;

Theiwick-tube is supplied with oil from the oil-reservoir by means of short pipes 18, which extend across the lower wick-tube chamber 42.

Within the inner wall tube 13 of the wicktube 12 and supported thereby is placed a removable air deflector o'r flame spreader 2O composed of a foraminous cone 21, which is inclosed within and capped by an outwardly flaring or concave ring 23, likewise perforated and surmounted with a circular imperforate disk 24. Since the heat generated at this point is considerable, and to prevent disengagement of the cone 21 from the ring 23, the lower portion of the latter is equipped with a solid metallic band 47. The apex of the cone rests against the under surface of the plate 24, while the lower edge of the band is turned inwardly to form a lip or flange 48. Thus the cone is kept firmly in place and no solder is required. The composition of this band may be of brass or other metal not easily aifected by a high degree, of heat.

The several parts abovedescribed are to.

prevent the too sudden passage of air through the central bore of the wick-tube, and the perforations tend to break up and retard the air currents, which finally are allowed to reach the flame under such conditions that a proper air supply is furnished and still no.

smoking or flickering. of the flame occurs.

One of the features of this inventionis embodied in the construction and method of mounting the chimney-holder, whereby the latter is made readily removable. in order to.

alluded to, and as. shown in the drawingsthis. perforated portion is, made as a. separate sleeve piece 50, preferably adaptedto fit about and engage the upper extremity of the wick tube cylinder, and is surmountedby the an:

nular perforated plate 29. Fig. 6, represents.

the plate 29 as separate from. thesleeve. 5.0, while Fig. 51's. an illustration of. the sameain which the plate and sleeve aremade-integral. This latter constructionsimplifies.the cost.

Since the chimney-holder rests uponand is. supported by the plate 29.1ny object is-to pre v ventthe least metallic contact possible e;

tween said, parts, in order to. overcome. the. conduction o'f-heat, which would otherwise occur. To this. end, as. shown, in Figs. Sand- 5, theplate 29 ismade flat, while thechime hey-holder is fitted with. a. series, of projec-. tions or bosses 30, wherebyfree air. circnla: tion, is provided to keepth'e. parts cool-,and

at the sametimesupply acurrent ofair, which.

flows above the plate 29. and, externally. about theframe; this. air current passing, through thecentralorificeof theholderj It is eyident, that since the annular plate29;hasacurrent.

of air passing ab0veit, and a second flowing directly through it, there is little or'no tendencytoheat, and the temperature of the parts on which it rests are never high even when the stove is in use. An alternative construction of the plate is shown in Fig. 6, where the plate has-a series :of radial ribs 31, while those. on the holder are omitted. In either case the least metallic contact is presented, and as the external air supply is continually passing between the annular plate 29 and the chimney-holder 25 little or no heat is transmitted to the wick-tube or to the wick-tube cylinder.

Another important feature in this stove consists in providing the chimney 32 with a jacket 84. These parts, the chimney and jacket are supported respectively upon the ledges 27, 28 before mentioned. Hitherto in apparatus of thisclass, the hot air radiating from the chimney has been lostto a great ex 'tent, generally escaping into the room, and only such air as passes upward directly through the chimney itself has been utilized. In my invention I inclose thechimney within the. jacket and extend the latter into the hot air chamber. 9. Thus all the heat; radiating from, the. chimney proper is confined and serves, to. heat a column of air, whichenters through the orifice 35 at the base, and is passed into the. hot air chamber to intensify thetemperature at that point. A transparent medium 36in the jacket in conjunction with thatin thechimney permits theah eight .ot. the flameto. be determined at a glance.

What I claimis 1. In a central draft-heater, the combination withv an. oil-reservoir, and. a wick-tube cylinder which extends. through thQ. reservoir, of a wick-tube within the wick-.tubecyh inder, but non-contiguous thereto, anda transversepartition, said partitiontoextend.across thespace between thewick-tube cylinder-and the wick-tube, substantially ass-stated.

2. In. a. central draft: burner,.the. combination. with an oil-reservoir, and a wick tube fed fronrsaid reservoir, of awick-tube-icy-lim d'er extending up. through. the reservoir,said cylinder foraminated'at the upper-portionand open at the bottom. and surrounding; the wick-tube, anda removable imperfora te-annular partition. transversely across thee-pace between the wick-tubecylinder and the wicktube, substantially as and for the purposes explained;v

3. In. acentral draft-heatei3a wick-tube; the.

central flame spreader, and-a wick-tuber. cylinder, which incloses saidwick-tube and-are "moya bleim perforate annular partitiorrwhijeh d ivides -.thespace. between the-wick-tube-andz Wick-tube. cylinder into an-upper and; lower portion, combined with an. annular perforatedplate29, and detach-able chimneyholdersupporteduponsaid plate, one ofi saidparts. providedwith ribs. or bosses substan, tially; as described;

a 4. Incentral draft-heaters, an-oil reservoir, awick tubecylinder, combinedwith a remov- IIO nected with the chimney and the jacket, sub

stantially as stated. j

5. In combination with an apertured hot air receptacle, and an oil-reservoir suitably mounted, a central draft heater supported between them and composed as follows:.a wick-tube cylinder perforated at the top portion and adapted to extend through the oil reservoir, theforaminous plate 29, a removable chimney holder, the chimney and its jacket, a central wick-tube adapted to project through the bottom of the wick-tube cylinder, the flame deflector, and means for allowing oil to pass from the oil reservoir across the wick-tube cylinder to the wicktube, substantially as explained.

6. In a central draft heater, the combination with a wick-tube, its flame deflector, the inclosing wick-tube cylinder perforated in the upper portion, and the annular foraminated plate 29 which surmounts the same, of a removable chimney holder formed with outwardly extending horizontal ledges, and a series of inwardly projecting bosses adapted to contact with the said plate 29, substantially as set forth and stated.

7. ha central draft heater, the combina tion with a wick tube, its flame deflector, the inclosing wick-tube cylinder open atits lower end, and a transverse annular imperforate.

partition between the wicktube and the wicktube cylinder, of a foraminated sleeve 50 adapted to engage the top of said wick-tube cylinder, the annular foraminated plate 29 aflixed tosaid sleeve, and a removable chimney holder fitted with outwardly extending ledges, and with a series of inwardly projecting bosses adapted to contact with said plate 40 .29, substantially for purposes explained. 8. A detachable chimney-holdercomposed of anannular, conical shaped ring having a central upper aperture to contain a flame spreader and wick, and formed with outwardly extending ledges at or near its base and with a series of inwardly projecting bosses as supports for said holder, substantially as specified. r 9. In a central draft-heater the combination with a wick-tube,its flame deflector, and a wick-tube cylinder, open at the lower end and inclosing but non-contiguous to said wicktube, of an annular partition transversely in the space between said wick-tube and wicktube cylinder, circumferential openings in the wick-tube cylinder below the partition, and circumferential perforations in the said cylinderabove the partition, substantially as set forth.

10.'In a central draft-heater, a wick-tube, the flame deflector, and a wick-tube cylinder open at the bottom to create an air passage between the wick-tnbe and wick-tube cylinder, an imperforate annular partition AUGUSTINE 0. WEST.

Witnesses:

ARGHIBALD ANDERSON, H. E. LODGE, 

